Syr-RomLaw.16.22 :ܫܠܝܛ ܠܗ ܕܢܦܢܝܘܗܝ ܠܗ݀ܘ ܕܙܒܢܗ ܘܢܣ݁ܒ ܟܣܦܗ‏ : he is permitted to return it to the one who sold it and take back his money
See the entire entry for pny vb. to turn